Bentley 330102-00-60-05-02-05 Electromagnetic Eddy Current Probe Product Description

I. Product Overview

330102-00-60-05-02-05 is a 3300 XL 8mm armored eddy current probe under the brand name Bently Nevada of Baker Hughes. It is the core sensing component of the 3300 XL sensor system and requires an extension cable and a preamplifier to form a complete monitoring chain. The product adopts 3/8-24 UNF standard threads and an armored stainless steel protective structure, specially designed for harsh industrial environments, used for non-contact high-precision measurement of shaft vibration, axial displacement, phase difference, and rotational speed of rotating machinery. It complies with API 670 industry standards and has the characteristics of stable measurement, strong anti-interference, and wide temperature tolerance. It is widely used in large-scale unit condition monitoring in power, petrochemical, and metallurgical industries.

II. Basic Information

Model: 330102-00-60-05-02-05

Brand: Bently Nevada

Series: 3300 XL 8mm Eddy Current Sensor System

Type: Armored Proximity Eddy Current Probe (330102 is the armored version, different from 330101 standard version)

Thread Specification: 3/8-24 UNF American standard fine thread

Model Code Meaning: 00 represents the length of the non-threaded section is 0 inches; 60 represents the total length of the housing is 6.0 inches; 05 represents the total length of the probe's built-in cable is 0.5 meters; 02 represents the micro ClickLoc coaxial connector; 05 represents the CSA, ATEX, IECEx explosion-proof configuration

Structural Features: Stainless steel armored housing, high mechanical strength, resistant to bending, compression, and oil mist and water vapor; using patented TipLoc forming process, the end of the probe is firmly bonded to the housing; the cable adopts CableLoc design, with a tensile strength of up to 330N

Connector Type: Micro ClickLoc coaxial connector, reliable connection, convenient plugging and unplugging

Certifications: CSA, ATEX, IECEx (explosion-proof certification), CE, UL, compatible with industrial safety and electromagnetic compatibility standards

Protection Grade: IP65 (probe body), suitable for oil mist, dust, and water vapor conditions

Compatible Systems: 3300 XL full series preamplifiers (such as 330100 series), 3500/3300 TSI systems

III. Electrical and Mechanical Parameters

Electrical Parameters

Sensitivity: 7.87V/mm (200mV/mil), linear error ≤ ±1%

Linear Range: 2.0mm (80mil), effective range 0.25mm–2.3mm

Output Signal: Cooperates with preamplifier to output - 1VDC to - 17VDC standard DC voltage

Frequency Response: 0–10kHz (+0/-3dB), covering the full vibration frequency band of rotating machinery

Probe DC Resistance: 7.59Ω ± 0.50Ω (0.5 meter cable)

Minimum Target Diameter: 8.9mm (0.35 inches), recommended shaft diameter ≥ 50.8mm (2 inches)

Environmental Parameters

Probe Working Temperature: Standard - 52℃ to + 177℃; High-temperature version can reach + 218℃

Storage Temperature: -52℃ to + 260℃

Relative Humidity: 5%–95% (no condensation)

Interference Resistance: Complies with CE EMI/RFI standards, tolerant to strong electromagnetic interference from frequency converters, motors, etc.

Mechanical Parameters

Total Length of Shell: 6.0 inches (compatible with medium-depth installation holes) Installation torque: Recommended 1.1–1.4 N·m, avoid damage to the threads

Cable bending radius: ≥ 5 times the cable diameter, to prevent the armor layer from breaking

VII. Core Functions

1. Non-contact precise measurement

Based on the eddy current effect, the end coil of the probe receives the high-frequency excitation signal of the preamplifier at 0.5–2 MHz, generating an alternating magnetic field; when close to the metal shaft body, the surface of the shaft induces eddy currents, reversing the impedance of the coil, and in combination with the preamplifier, converting it into a linear voltage signal, accurately reflecting the change in the gap between the probe and the shaft, achieving synchronous measurement of static displacement and dynamic vibration.

2. Armor protection and high reliability

The overall adopts a stainless steel armor structure, the cable and connector are integrated for protection, capable of withstanding on-site oil mist, water vapor, dust and mechanical collisions, suitable for harsh working conditions such as compressors and steam turbines; patented TipLoc and CableLoc designs, strengthening the connection strength between the end and the cable, long-term operation without signal drift, with a long average downtime.

3. Wide temperature stability and temperature compensation

Built-in high-temperature coils and insulating materials, combined with the system's automatic temperature compensation circuit, within the -52°C to +177°C wide temperature range, the sensitivity stability ≤ ±1.5%, able to withstand temperature fluctuations in the working conditions, ensuring the accuracy of long-term monitoring data.

4. Quick installation and interchangeability

Standard 3/8-24 UNF threads are compatible with universal installation bases, the micro ClickLoc connector can be quickly plugged and unplugged without tools; probes, extension cables, and preamplifiers of the same specification can be interchanged on-site without secondary calibration, reducing maintenance downtime.

5. Explosion-proof adaptation and fault diagnosis

Complies with CSA, ATEX, IECEx explosion-proof certifications, suitable for flammable and explosive hazardous working conditions; combined with the preamplifier, it can achieve self-check of line faults, identifying probe breakage, short circuit, cable damage and other issues, outputting fault signals for alarm; compatible with 3500/3300 TSI systems, PLCs, DCSs, supporting real-time data collection, over-limit alarms and fault recording.

VIII. Working Principle

The core of the probe is the high-frequency coil at the end, the preamplifier injects high-frequency alternating current into the coil, generating a stable alternating magnetic field; when the probe approaches the rotating metal shaft (conductor), the magnetic field induces a closed eddy current on the shaft surface, the reverse magnetic field generated by the eddy current will change the inductance and impedance of the probe coil; the probe transmits the impedance change signal to the preamplifier, the preamplifier converts it into a standard DC voltage signal at a fixed ratio of 7.87V/mm, the larger the gap, the closer the voltage is to -17V, the smaller the gap, the closer it is to -1V, thus accurately measuring dynamic parameters such as shaft vibration and axial displacement.

IX. Installation and Wiring Requirements

Installation position: Vertically installed on the radial or axial direction of the measured shaft, the end of the probe is parallel to the shaft surface, avoiding measurement errors caused by inclination; the installation area should be away from strong magnetic fields and heating elements, reducing interference.

Gap setting: Recommended to set at the midpoint of the linear range (about 1.27mm), corresponding to -9VDC output from the preamplifier, achieving the best linearity and stability.

Thread installation: 3/8-24 UNF threads are screwed into the base, torque controlled within 1.1–1.4 N·m, avoiding over-tightening and damaging the threads or squeezing the cable.

Cable laying: Armor cable bending radius ≥ 5 times the cable diameter, avoiding sharp-angle bending; separate wiring from power cables to prevent electromagnetic interference; the total length must strictly match the 0.5-meter specification, and cannot be randomly cut.

Connector connection: The micro ClickLoc connector is inserted into the slot, hearing a "click" sound indicates locking, ensuring a firm connection and stable signal transmission. Petrochemical industry: Condition monitoring for centrifugal compressors, gas turbines, process pump sets, and mixing units to ensure continuous production and predict shaft system failures; suitable for hazardous areas with flammable and explosive substances.

Metallurgical industry: Vibration and displacement monitoring for blast furnace fans, large transmission motors, and rotating components of rolling mills to prevent equipment overload and damage.

Industrial drives: Phase angle, speed, and eccentricity measurement for large motors and high-speed rotating equipment to provide data for dynamic balance correction and fault diagnosis.

TSI system support: As the front-end sensing component of the 3300 XL system, it is equipped with a preamplifier and monitoring card to build a safety protection and condition monitoring system for rotating machinery.

VIII. Product Advantages

High protection and explosion-proof: Stainless steel armored structure, IP65 protection, capable of withstanding harsh conditions; equipped with CSA, ATEX, and IECEx explosion-proof certifications, suitable for hazardous areas.

High precision: 7.87V/mm standard sensitivity, small linear error, strong wide-temperature stability, meeting API 670 high-precision requirements.

Easy maintenance: Components are interchangeable, allowing for quick on-site replacement without calibration; connectors can be plugged and unplugged without tools, simplifying maintenance procedures.

Strong adaptability: 3/8 - 24 UNF standard threads, compatible with the entire 3300 XL system, suitable for new and old monitoring equipment.

Long life: Industrial-grade materials resistant to high temperatures and aging, tested under harsh conditions, supporting 7×24-hour continuous operation.